How to set rows for windows 8 titles

3 Rows Only
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                                        | Many Titles
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Press -Win+R- key to open the -Run- dialog box,you can also open it by searching on the start screen.
Now in the -Run- command box type regedit and press -OK-

 Now in the registery Editor,navigate to following:

Go To -->

      HKEY_CURRENT_USER\Software\Microsoft\Win­dows\CurrentVersion\ImmersiveShell\Grid

Now in the right pane of the windows,find Layout_MaximumRowCount

If you are not able to find that,then Right click on the white space and select -New- and
then on -DWORD (32-bit)- and named it as Layout_MaximumRowCount

Now right click on it and modify the value with anything you like from 1 to 5.For example, if you have 5 rows in the Start screen,
set the value to 4 or 3 Click on the OK button! and you are done.

 Than just restart your PC......